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Finding the Fourth Proportional to 71,009.01, 97,995.40 and 39,179.97

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Solution

The fourth proportional to 71,009.01, 97,995.40 and 39,179.97 is: 54,069.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,009.01 : 97,995.40 = 39,179.97 : x
  2. Step 2: Convert to fraction form
    71,009.01/97,995.40 = 39,179.97/x
  3. Step 3: Cross multiply
    71,009.01x = 97,995.40 × 39,179.97
  4. Step 4: Simplify right side
    71,009.01x = 3,839,456,734.19
  5. Step 5: Solve for x
    x = 3,839,456,734.19/71,009.01
  6. Step 6: Final answer
    x = 54,069.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.